#!/usr/bin/env python
# vim:fileencoding=utf-8


__license__ = 'GPL v3'
__copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'

from tinycss.color3 import hsl_to_rgb, parse_color_string
from tinycss.tests import BaseTest


class TestColor3(BaseTest):

    def test_color_parsing(self):
        for css_source, expected_result in [
            ('', None),
            (' /* hey */\n', None),
            ('4', None),
            ('top', None),
            ('/**/transparent', (0, 0, 0, 0)),
            ('transparent', (0, 0, 0, 0)),
            (' transparent\n', (0, 0, 0, 0)),
            ('TransParent', (0, 0, 0, 0)),
            ('currentColor', 'currentColor'),
            ('CURRENTcolor', 'currentColor'),
            ('current_Color', None),

            ('black', (0, 0, 0, 1)),
            ('white', (1, 1, 1, 1)),
            ('fuchsia', (1, 0, 1, 1)),
            ('cyan', (0, 1, 1, 1)),
            ('CyAn', (0, 1, 1, 1)),
            ('darkkhaki', (189 / 255., 183 / 255., 107 / 255., 1)),

            ('#', None),
            ('#f', None),
            ('#ff', None),
            ('#fff', (1, 1, 1, 1)),
            ('#ffg', None),
            ('#ffff', None),
            ('#fffff', None),
            ('#ffffff', (1, 1, 1, 1)),
            ('#fffffg', None),
            ('#fffffff', None),
            ('#ffffffff', None),
            ('#fffffffff', None),

            ('#cba987', (203 / 255., 169 / 255., 135 / 255., 1)),
            ('#CbA987', (203 / 255., 169 / 255., 135 / 255., 1)),
            ('#1122aA', (17 / 255., 34 / 255., 170 / 255., 1)),
            ('#12a', (17 / 255., 34 / 255., 170 / 255., 1)),

            ('rgb(203, 169, 135)', (203 / 255., 169 / 255., 135 / 255., 1)),
            ('RGB(255, 255, 255)', (1, 1, 1, 1)),
            ('rgB(0, 0, 0)', (0, 0, 0, 1)),
            ('rgB(0, 51, 255)', (0, .2, 1, 1)),
            ('rgb(0,51,255)', (0, .2, 1, 1)),
            ('rgb(0\t,  51 ,255)', (0, .2, 1, 1)),
            ('rgb(/* R */0, /* G */51, /* B */255)', (0, .2, 1, 1)),
            ('rgb(-51, 306, 0)', (-.2, 1.2, 0, 1)),  # out of 0..1 is allowed

            ('rgb(42%, 3%, 50%)', (.42, .03, .5, 1)),
            ('RGB(100%, 100%, 100%)', (1, 1, 1, 1)),
            ('rgB(0%, 0%, 0%)', (0, 0, 0, 1)),
            ('rgB(10%, 20%, 30%)', (.1, .2, .3, 1)),
            ('rgb(10%,20%,30%)', (.1, .2, .3, 1)),
            ('rgb(10%\t,  20% ,30%)', (.1, .2, .3, 1)),
            ('rgb(/* R */10%, /* G */20%, /* B */30%)', (.1, .2, .3, 1)),
            ('rgb(-12%, 110%, 1400%)', (-.12, 1.1, 14, 1)),  # out of 0..1 is allowed

            ('rgb(10%, 50%, 0)', None),
            ('rgb(255, 50%, 0%)', None),
            ('rgb(0, 0 0)', None),
            ('rgb(0, 0, 0deg)', None),
            ('rgb(0, 0, light)', None),
            ('rgb()', None),
            ('rgb(0)', None),
            ('rgb(0, 0)', None),
            ('rgb(0, 0, 0, 0)', None),
            ('rgb(0%)', None),
            ('rgb(0%, 0%)', None),
            ('rgb(0%, 0%, 0%, 0%)', None),
            ('rgb(0%, 0%, 0%, 0)', None),

            ('rgba(0, 0, 0, 0)', (0, 0, 0, 0)),
            ('rgba(203, 169, 135, 0.3)', (203 / 255., 169 / 255., 135 / 255., 0.3)),
            ('RGBA(255, 255, 255, 0)', (1, 1, 1, 0)),
            ('rgBA(0, 51, 255, 1)', (0, 0.2, 1, 1)),
            ('rgba(0, 51, 255, 1.1)', (0, 0.2, 1, 1)),
            ('rgba(0, 51, 255, 37)', (0, 0.2, 1, 1)),
            ('rgba(0, 51, 255, 0.42)', (0, 0.2, 1, 0.42)),
            ('rgba(0, 51, 255, 0)', (0, 0.2, 1, 0)),
            ('rgba(0, 51, 255, -0.1)', (0, 0.2, 1, 0)),
            ('rgba(0, 51, 255, -139)', (0, 0.2, 1, 0)),

            ('rgba(42%, 3%, 50%, 0.3)', (.42, .03, .5, 0.3)),
            ('RGBA(100%, 100%, 100%, 0)', (1, 1, 1, 0)),
            ('rgBA(0%, 20%, 100%, 1)', (0, 0.2, 1, 1)),
            ('rgba(0%, 20%, 100%, 1.1)', (0, 0.2, 1, 1)),
            ('rgba(0%, 20%, 100%, 37)', (0, 0.2, 1, 1)),
            ('rgba(0%, 20%, 100%, 0.42)', (0, 0.2, 1, 0.42)),
            ('rgba(0%, 20%, 100%, 0)', (0, 0.2, 1, 0)),
            ('rgba(0%, 20%, 100%, -0.1)', (0, 0.2, 1, 0)),
            ('rgba(0%, 20%, 100%, -139)', (0, 0.2, 1, 0)),

            ('rgba(255, 255, 255, 0%)', None),
            ('rgba(10%, 50%, 0, 1)', None),
            ('rgba(255, 50%, 0%, 1)', None),
            ('rgba(0, 0, 0 0)', None),
            ('rgba(0, 0, 0, 0deg)', None),
            ('rgba(0, 0, 0, light)', None),
            ('rgba()', None),
            ('rgba(0)', None),
            ('rgba(0, 0, 0)', None),
            ('rgba(0, 0, 0, 0, 0)', None),
            ('rgba(0%)', None),
            ('rgba(0%, 0%)', None),
            ('rgba(0%, 0%, 0%)', None),
            ('rgba(0%, 0%, 0%, 0%)', None),
            ('rgba(0%, 0%, 0%, 0%, 0%)', None),

            ('HSL(0, 0%, 0%)', (0, 0, 0, 1)),
            ('hsL(0, 100%, 50%)', (1, 0, 0, 1)),
            ('hsl(60, 100%, 37.5%)', (0.75, 0.75, 0, 1)),
            ('hsl(780, 100%, 37.5%)', (0.75, 0.75, 0, 1)),
            ('hsl(-300, 100%, 37.5%)', (0.75, 0.75, 0, 1)),
            ('hsl(300, 50%, 50%)', (0.75, 0.25, 0.75, 1)),

            ('hsl(10, 50%, 0)', None),
            ('hsl(50%, 50%, 0%)', None),
            ('hsl(0, 0% 0%)', None),
            ('hsl(30deg, 100%, 100%)', None),
            ('hsl(0, 0%, light)', None),
            ('hsl()', None),
            ('hsl(0)', None),
            ('hsl(0, 0%)', None),
            ('hsl(0, 0%, 0%, 0%)', None),

            ('HSLA(-300, 100%, 37.5%, 1)', (0.75, 0.75, 0, 1)),
            ('hsLA(-300, 100%, 37.5%, 12)', (0.75, 0.75, 0, 1)),
            ('hsla(-300, 100%, 37.5%, 0.2)', (0.75, 0.75, 0, .2)),
            ('hsla(-300, 100%, 37.5%, 0)', (0.75, 0.75, 0, 0)),
            ('hsla(-300, 100%, 37.5%, -3)', (0.75, 0.75, 0, 0)),

            ('hsla(10, 50%, 0, 1)', None),
            ('hsla(50%, 50%, 0%, 1)', None),
            ('hsla(0, 0% 0%, 1)', None),
            ('hsla(30deg, 100%, 100%, 1)', None),
            ('hsla(0, 0%, light, 1)', None),
            ('hsla()', None),
            ('hsla(0)', None),
            ('hsla(0, 0%)', None),
            ('hsla(0, 0%, 0%, 50%)', None),
            ('hsla(0, 0%, 0%, 1, 0%)', None),

            ('cmyk(0, 0, 0, 0)', None),
        ]:
            result = parse_color_string(css_source)
            if isinstance(result, tuple):
                for got, expected in zip(result, expected_result):
                    # Compensate for floating point errors:
                    self.assertLess(abs(got - expected), 1e-10)
                for i, attr in enumerate(['red', 'green', 'blue', 'alpha']):
                    self.ae(getattr(result, attr), result[i])
            else:
                self.ae(result, expected_result)

    def test_hsl(self):
        for hsl, expected_rgb in [
            # http://en.wikipedia.org/wiki/HSL_and_HSV#Examples
            ((0,     0,    100), (1,     1,     1)),
            ((127,   0,    100), (1,     1,     1)),
            ((0,     0,    50), (0.5,   0.5,   0.5)),
            ((127,   0,    50), (0.5,   0.5,   0.5)),
            ((0,     0,    0), (0,     0,     0)),
            ((127,   0,    0), (0,     0,     0)),
            ((0,     100,  50), (1,     0,     0)),
            ((60,    100,  37.5), (0.75,  0.75,  0)),
            ((780,   100,  37.5), (0.75,  0.75,  0)),
            ((-300,  100,  37.5), (0.75,  0.75,  0)),
            ((120,   100,  25), (0,     0.5,   0)),
            ((180,   100,  75), (0.5,   1,     1)),
            ((240,   100,  75), (0.5,   0.5,   1)),
            ((300,   50,   50), (0.75,  0.25,  0.75)),
            ((61.8,  63.8, 39.3), (0.628, 0.643, 0.142)),
            ((251.1, 83.2, 51.1), (0.255, 0.104, 0.918)),
            ((134.9, 70.7, 39.6), (0.116, 0.675, 0.255)),
            ((49.5,  89.3, 49.7), (0.941, 0.785, 0.053)),
            ((283.7, 77.5, 54.2), (0.704, 0.187, 0.897)),
            ((14.3,  81.7, 62.4), (0.931, 0.463, 0.316)),
            ((56.9,  99.1, 76.5), (0.998, 0.974, 0.532)),
            ((162.4, 77.9, 44.7), (0.099, 0.795, 0.591)),
            ((248.3, 60.1, 37.3), (0.211, 0.149, 0.597)),
            ((240.5, 29,   60.7), (0.495, 0.493, 0.721)),
        ]:
            for got, expected in zip(hsl_to_rgb(*hsl), expected_rgb):
                # Compensate for floating point errors and Wikipedia’s rounding:
                self.assertLess(abs(got - expected), 0.001)
